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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-14209-01
Chapter 12 Configuring WDS, Fast Secure Roaming, Radio Management, and Wireless Intrusion Detection Services
Understanding Fast Secure Roaming
Role of Access Points Using the WDS Device
The access points on your wireless LAN interact with the WDS device in these activities:
• Discover and track the current WDS device and relay WDS advertisements to the wireless LAN.
• Authenticate with the WDS device and establish a secure communication channel to the WDS
device.
• Register associated client devices with the WDS device.
• Report radio data to the WDS device.
Understanding Fast Secure Roaming
Access points in many wireless LANs serve mobile client devices that roam from access point to access
point throughout the installation. Some applications running on client devices require fast reassociation
when they roam to a different access point. Voice applications, for example, require seamless roaming
to prevent delays and gaps in conversation.
During normal operation, LEAP-enabled client devices mutually authenticate with a new access point
by performing a complete LEAP authentication, including communication with the main RADIUS
server, as in Figure 12-1.
Integrated Services Router (ISR) 100 (depending on ISR platform)
WLSM-equipped switch 600
Table 12-1 Participating Access Points Supported by WDS Devices (continued)
Unit Configured as WDS Device Participating Access Points Supported
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